(Mishnah): There are five Tamei [colors of] blood in a woman -- red, black, like the radiance of saffron, like water of earth (this will be explained in Halachah 7), and like mixed wine.

Beis Shamai [is Metamei] also blood like Meimei Tilsan (water in which fenugreek was soaked) or like Meimei Basar (juice that exudes from roasting meat);

Beis Hillel is Metaher these.

Akavya ben Mehalalel is Metamei Yarok. (Almost all Rishonim say that (plain) Yarok is yellow. Green is called Yarok k'Karsi (like leeks). Me'iri - Yarok is green, but all are Metamei yellow.) Chachamim are Metaher.

R. Meir says, (even) if [such] a Kesem (blood) is not Tamei, it is Tamei due to a liquid (it is Machshir to receive Tum'ah. MISHNAH ACHARONAH - he calls the blood a Kesem, for Dam Nidah is Metamei even when it is dry.)

R. Yosi says, it is neither.

(Gemara - Rav and R. Yochanan): There are four [colors of] blood in a woman - red is stricken, and it becomes black.

(Shmuel): Black comes from all of them (when they are stricken).

Question: What is the source for five Tamei bloods from the Torah?

Answer (R. Yehoshua ben Levi): "V'Hi Gilsah Es Makor Dameha'' (teaches two), "v'Tiharah mi'Mekor Dameha'' (teaches another two), "Dam Yihyeh Zovah bi'Vsarah'' [teaches a fifth].

Question: It says also "v'Ishah Ki Yizov Zov Damah''!

Answer: This is one of those [taught already], just it came in her days of Zivah, and it makes her a Zavah.

Question: What is the source that there are Tamei bloods and Tahor bloods?

Answer (R. Chama bar Yosef citing R. Hoshayah): It does not say 'Ki Yipalei Mimcha Davar la'Mishpat Bein Dam v'Dam' (which connotes bloods of the same type), rather, "Bein Dam l'Dam'' (bloods of different types) - this teaches that there are Tamei bloods and Tahor bloods (ALEI TAMAR).

(Mishnah): Beis Shamai say, even like Meimei Tilsan and like Meimei Basar [are Tamei].

Question: [They hold that] there are seven! (The Torah alludes to only five! We did not ask about Akavya. He holds that black was red, just it was stricken, like Rav and R. Yochanan (PANIM ME'IROS), or he expounds a sixth from "v'Ishah Ki Yizov Zov Damah'', like the Havah Amina above (OHR SOMAYACH Hilchos Isurei Bi'ah 5:14).)

Answer: [Beis Shamai agree that mid'Oraisa, only five are Temei'im. They are Metamei these two mid'Rabanan because] they resemble water of earth [which is Tamei].

(R. Yosi citing Rav, and Talmidim citing R. Yochanan): R. Meir was Metamei (considers to be a liquid to be Machshir) only [Yarok], which Akavya touched (was Metamei).

Question: He should be Metamei [also] k'Meimei Tilsan and k'Meimei Basar, which Beis Shamai touched (are Metamei)!

Answer: [Beis Shamai are Metamei them only mid'Rabanan, because] they resemble water of earth. Tamei blood is Machshir, but Tahor blood is not Machshir. (We explained this like RIDVAZ.)